Many folks (myself included) predicted a wholesale bloodbath in Iraq following our withdrawal, well it ain't happened. Sure, some bombings, but not nearly the wholesale chaos/civil war that seemed a real possibility. So, so far so good more or less. I hope it holds to everyday run-of-the-mill level of violence (for that part of the world) and doesn't escalate.
Time will tell.
Maybe they want a stabilized country with a future, maybe one of the warring factions just can't get a one up on the others (Curds/Shiites and Sunnis) right now the way power was divided up and elections determined, I dunno.